ROTRONIC HP22A User Manual
E-M-HP22-V2_13
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Rotronic AG
Bassersdorf, Switzerland
HygroPalm HP22-A hand-held indicator:
User Guide
Document title
HygroPalm HP22-A Hand-Held Indicator
User Guide
Instruction Manual
Page
1 of 16
Document Type
© 2010-2012; Rotronic AG E-M-HP22-V2_13
E-M-HP22-V2_13
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Rotronic AG
Bassersdorf, Switzerland
HygroPalm HP22-A hand-held indicator:
User Guide
Document title
Instruction Manual
Page
2 of 16
Document Type
Table of contents
1
Overview .................................................................................................................................................. 3
2 General description ................................................................................................................................. 3
2.1 Power supply ......................................................................................................................................... 3
2.2 Measured parameters ........................................................................................................................... 3
2.3 Calculated parameters .......................................................................................................................... 3
2.4 Service connector .................................................................................................................................. 4
3 User configurable settings and functions ............................................................................................. 4
3.1 Function overview ................................................................................................................................. 4
3.2 Factory default settings ......................................................................................................................... 5
3.3 Interaction between the HP22 and probe functions ............................................................................... 7
4 Operation ................................................................................................................................................. 8
4.1 Display .................................................................................................................................................. 8
4.2 Keypad .................................................................................................................................................. 8
4.4 ON/OFF key .......................................................................................................................................... 9
4.5 Changing the parameters shown on the display ................................................................................... 9
4.6 HOLD function ....................................................................................................................................... 9
4.7 Changing the unit system ...................................................................................................................... 9
4.8 Low battery indicator ............................................................................................................................. 9
4.9 Internal menu ...................................................................................................................................... 10
4.10 Practical advice for measuring humidity .............................................................................................. 11
5 Maintenance ........................................................................................................................................... 11
5.1 Replacing the battery .......................................................................................................................... 11
5.2 Service cable ....................................................................................................................................... 11
5.3 Location of the service connector (mini USB type) .............................................................................. 12
5.4 Periodic calibration check of the probe ................................................................................................ 12
5.5 Cleaning or replacing the probe dust filter ........................................................................................... 13
6 Firmware updates .................................................................................................................................. 14
7 Technical data ....................................................................................................................................... 14
7.1 Specifications ...................................................................................................................................... 14
7.2 Dew point accuracy ............................................................................................................................. 15
8 Accessories ........................................................................................................................................... 15
9 Supporting documents ......................................................................................................................... 16
10 Document releases................................................................................................................................ 16
© 2010-2012; Rotronic AG E-M-HP22-V2_13
E-M-HP22-V2_13
Document code Unit
Rotronic AG
Bassersdorf, Switzerland
HygroPalm HP22-A hand-held indicator:
User Guide
Document title
Instruction Manual
Page
3 of 16
Document Type
Applicability:
This manual is valid for the HP22 with firmware version 2.x, where 2.x can be 2.0, 2.1 etc. Changes to the last
digit of the version number reflect minor firmware changes that do not affect the manner in which the
instrument should be operated.
1 Overview
The HP22 is a highly accurate hand-held indicator that displays relative humidity, temperature and a
calculated parameter such as the dew or frost point. The HP22 operates with a regular 9V alkaline battery and
is available with a wide assortment of HygroClip 2 humidity-temperature probes to meet al most any
requirement. The HygroClip 2 probes feature well proven, durable sensors. Digital signal processing ensures
consistent product performance and also facilitates the task of field maintenance with features such as
potentiometer free – digit al cal i br atio n.
.
Depending on the probe model, the HP22 can measure conditions within the range of 0 to 100 %RH and -100
to 200°C (-148 to 392°F). The temperature operating range of the HP22 electronics is limited to -10…60°C.
Based on the ROTRONIC AirChip 3000 digital technology the HP22 indicator and HygroClip 2 probes offer
the following user functions:
• User configurable settings
• Calculation of psychrometric parameters such as the dew or frost point
• HOLD function
• Humidity temperature calibration and adjustment
• Simulator mode
• Automatic humidity sensor test and drift compensation
• Sensor failure mode
• Data recording
The ability for the user to easily update both the HP22 and HygroClip 2 probe firmware means that the
indicator and probes can be kept up-to-date regarding any future functionality improvement.
2 General description
2.1 Power supply
The HP22 operates with a regular 9V alkaline battery
2.2 Measured parameters
The probes used with the HP22 measure relative humidity with a ROTRONIC Hygromer® IN1 capacitive
sensor and temperature with a Pt100 RTD.
2.3 Calculated parameters
Using the ROTRONIC HW4 software, the HP22 can be configured by the user to calculate one of the
following parameters:
o Dew point (Dp) above and below freezing
o Frost point (Fp) below freezing and dew point above freezing
o Wet bulb temperature (Tw)
o Enthalpy (H)
o Vapor concentration (Dv)
o Specif ic humidity (Q)
o Mixing ratio by weight (R)
© 2010-2012; Rotronic AG E-M-HP22-V2_13
E-M-HP22-V2_13
AirChip 3000 Functions
Description
► Humidity / temperature adjustment
o 1-point or multi-point humidity calibrat ion or adjus tme nt
o Generate calibration and adjustment protocols
► Automatic humidity sensor test
Tests the humidity sensor for drift caused by contam ina nt s and
SQ-tuned (corrected for drift) or Bad (defective)
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Rotronic AG
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HygroPalm HP22-A hand-held indicator:
User Guide
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o Vapor concentration at saturation (Dvs)
o Vapor partial pressure (E)
o Vapor saturation pressure (Ew)
Note: some of the above parameters depend on the value of the barometric pressure. Using the ROTRONIC
HW4 software, a fixed barometric pressure value can be specified. For instructions see the following HW4
manual: E-M-HW4v3-F2-006
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2.4 Service connector
The service connector is a UART digital interfac e (Universal Asynchronous Receiver Transmitter) with a miniUSB type connector. This allows connecting the HP22 either to a PC running the ROTRONIC HW4 software
or to a probe input of another instrument that is compatible with the HygroClip 2 (HC2) probes. In both cases a
service cable is required. See “Maintenance” for the location of the servi ce conn ect or and for the type of
service cable to be used.
• Connecting the HP22 to a PC is used to configure the HP22, gain access to the HP22 and probe functions
such as humidity and temperature adjustment, read data from the HP22 on the PC and update the
firmware of either the HP22 or probe.
• Connecting the HP22 to another instrument is useful only when the other instrument has its own display
and keypad, and has a more powerful internal menu than the HP22 (example HP23 hand-held calibrator).
This allows showing the data measured by the HP22 on the other instrument display and also allows using
the other instrument internal menu to do for example a humidity and temperature adjustment of the HP22.
3 User configurable setti ngs a nd f unctions
The HP22 can be used just as any conventional humidity and temperature indicator and most users will never
need to use the HP22 configurable settings and functions.
Making use of the HP22 configurable settings and functions is entirely up to the user and the appropriate
settings depend on the user application. We have provided below a short description of the HP22 functions
and also indicated the factory default settings.
3.1 Function overview
MEASUREMENT ACCURACY AND RELIABILITY (PROBE FUNCTIONS)
and optional drift compensation
o 1-point or 2-point temperature calibrat ion or adjustment
o Generate a time stamp for calibrations and adjust ment s
o Retain and view last adjustment date and adjustment values
can be used to automatically apply a correction. The test is
automatically carried out at regular intervals of time. Can be
configured, enabled, or disabled
The humidity sensor status can be verified either with the HW4
software or with the instrument display and is shown as Good,
© 2010-2012; Rotronic AG E-M-HP22-V2_13
E-M-HP22-V2_13
► Data recording
The data recording function differs from a true data logging
HW4 software, time stamped and viewed
MEASUREMENT LOOP VALIDATION
Functions
Description
► Simulator mode
Used to make the HP22 generate fixed values for the humidity,
enabled or disabled
Functions
Description
► Device write protection
Used to protect the HP22 with a password to prevent
enabled or disabled
► Internal menu access from keypad
Used to prevent accidental changes to the HP22 settings and
the optional keypad. Can be enabled or disabled
Document code Unit
Rotronic AG
Bassersdorf, Switzerland
HygroPalm HP22-A hand-held indicator:
User Guide
Document title
function in the sense that the AirChip 3000 does not time stamp
the data. The data recording function can be use to investigate
events such as a sensor malfunction as well as to retrieve data
that would otherwise be lost
o Start or stop data recording - up to 2000 value pairs (%RH
and temperature)
o Starting a recording session erases all previously recorded
data
o The recording mode and log interval can be specified
o When the device is powered off, the recording session is
paused but not ended As long as the recording session
has not been ended, the device automatically resumes
recording data when powered up again
o The recorded data can be downloaded to a PC with the
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DEVICE SAFEGUARDS
3.2 Factory default settings
Notes:
o Configuration of the HP22 and probe by the user and access to its functions requires a PC with the
ROTRONIC HW4 software (version 2.1.1 or higher) installed. Service cable AC3006 is used to connect the
HP22 service connector to a USB port of the PC.
o Settings and functions that can also be either partially or fully accessed from the keypad are marked with
the letter K (see also Operation > Internal Menu).
temperature and calculated parameter. Can be configured,
unauthorized digital access by a digital user. Can be configured,
temperature-humidity adjustment by disabling the MENU key on
© 2010-2012; Rotronic AG E-M-HP22-V2_13
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